Asteroids

2025CP1 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.453

Aphelion (Q)

1.118

Eccentricity (e)

0.423

Inclination (i)

2.1

deg

Orbit period (P)

254.2

Earth MOID

0.00296

U parameter

6.2

Next Earth close approach

Date

2026-11-30

Nominal distance (from Earth center)

0.03302

4939787

Maximum Brightness

24.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.7

mag

Diameter

5 - 11*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-05

Observatory

University of Arizona Mt. Lemmon Survey

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.785395

1-sigma variation

0.000020

Unit

Eccentricity (e)

Value

0.423148

1-sigma variation

0.000083

Unit

Inclination (i)

Value

2.0513

1-sigma variation

0.0007

Unit

Long. of Ascending Node (Ω)

Value

133.1163

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

149.7196

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

221.77420

1-sigma variation

0.03411

Unit

Perihelion distance

Value

0.453057

1-sigma variation

Unit

Aphelion distance

Value

1.117733

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.030673

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.542546

1-sigma variation

Unit

MOID

Value

0.002958

1-sigma variation

Unit

Orbit Period

Value

254.2320

1-sigma variation

Unit

U parameter

Value

6.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.02074E-10	-1.67104E-9	-1.47346E-8	-1.17046E-8	-1.02348E-8	-6.83967E-7
e	-1.67104E-9	6.95349E-9	6.11783E-8	4.85057E-8	4.23610E-8	2.84413E-6
i	-1.47346E-8	6.11783E-8	5.43036E-7	4.34112E-7	3.72285E-7	2.50540E-5
Ω	-1.17046E-8	4.85057E-8	4.34112E-7	3.49880E-7	2.94164E-7	1.98853E-5
ω	-1.02348E-8	4.23610E-8	3.72285E-7	2.94164E-7	2.70505E-7	1.73794E-5
M	-6.83967E-7	2.84413E-6	2.50540E-5	1.98853E-5	1.73794E-5	1.16377E-3

Date of computation: 2026-07-30 14:25 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

28.694

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

5 - 11*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

633

Unit

Source

[1]

Normalized RMS of residuals

Value

0.795947

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-03.48424

Unit

Source

[2]

Last Observation

Value

2025-02-06.05553

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

46 (3)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2025CP1 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
MERCURY	1955-03-14 03:00	> 1 w	0.0385596	0.0382884	0.0138589
EARTH	1957-02-07 10:22	> 1 d	0.0318348	0.0027022	0.1243395
EARTH	1958-12-08 16:51	> 1 w	0.0831464	0.0382107	0.0633328
EARTH	1966-02-06 15:46	814.8	0.0089932	0.0027450	0.0098644
EARTH	1967-12-01 15:43	508.6	0.0387222	0.0352578	0.0024878
MERCURY	1972-07-17 06:52	1233.3	0.0402645	0.0373721	0.0016188
VENUS	1972-09-02 22:24	330.3	0.0160120	0.0044950	0.0055938
EARTH	1975-01-11 19:06	792.4	0.1316462	0.1304236	0.0004076
EARTH	1976-12-02 02:18	96.4	0.1987566	0.1954110	0.0011158
MERCURY	1978-10-21 13:30	7.7	0.0405339	0.0403827	0.0000504
EARTH	1982-02-07 17:52	92.9	0.0206251	0.0120422	0.0028805
EARTH	1983-12-04 12:14	265.0	0.0593173	0.0555469	0.0012846
MERCURY	1985-01-21 04:45	204.9	0.0415399	0.0395959	0.0007408
VENUS	1988-08-31 09:57	42.6	0.0117010	0.0091889	0.0008568
EARTH	1991-01-28 10:41	62.4	0.0878807	0.0875435	0.0001124
VENUS	1992-08-11 07:03	7.7	0.0256190	0.0255523	0.0000223
EARTH	1992-11-29 19:33	6.5	0.0620291	0.0616307	0.0001331
VENUS	1994-03-17 14:20	2.3	0.0431391	0.0431345	0.0000015
EARTH	2000-01-16 12:40	259.7	0.1235530	0.1226108	0.0003141
EARTH	2001-12-01 03:33	23.7	0.1417443	0.1391452	0.0008669
MERCURY	2002-05-24 20:33	139.1	0.0490907	0.0463824	0.0009402
EARTH	2007-02-06 08:38	52.6	0.1619139	0.1575133	0.0014669
EARTH	2008-12-27 00:17	459.2	0.1309080	0.1303543	0.0001849
EARTH	2016-02-08 09:08	5.3	0.0468626	0.0418606	0.0016678
EARTH	2017-12-10 02:10	272.8	0.0898807	0.0877959	0.0006969
MERCURY	2019-09-28 06:25	176.9	0.0393259	0.0384204	0.0003632
EARTH	2025-02-06 17:02	< 1 s	0.0037778	0.0037753	0.0000008
MERCURY	2025-04-16 00:22	33.2	0.0397580	0.0396177	0.0000468
VENUS	2026-10-23 13:49	26.8	0.0263645	0.0242447	0.0007087
EARTH	2026-11-30 18:11	36.4	0.0330204	0.0326200	0.0001468
EARTH	2032-02-05 16:55	46.7	0.1942955	0.1906925	0.0012010
EARTH	2033-12-24 16:24	507.8	0.1297943	0.1285531	0.0004141
VENUS	2037-04-06 08:44	113.3	0.0363531	0.0286119	0.0025942
EARTH	2041-01-28 02:05	323.7	0.0892509	0.0868884	0.0007876
EARTH	2042-11-30 02:40	26.7	0.1078302	0.1043872	0.0011497
EARTH	2048-02-08 04:31	16.0	0.0816095	0.0810267	0.0001943
EARTH	2049-12-07 17:35	77.9	0.0828570	0.0823069	0.0001835
MERCURY	2051-01-21 24:00	194.3	0.0385568	0.0379675	0.0002198
VENUS	2051-09-03 06:21	65.0	0.0235614	0.0228883	0.0003215
EARTH	2057-01-12 03:52	1120.5	0.1303630	0.1277405	0.0008747
MERCURY	2057-05-03 00:08	1293.5	0.0488020	0.0448277	0.0013265
VENUS	2063-09-21 10:39	387.7	0.0240369	0.0066459	0.0072695
EARTH	2064-02-07 20:30	315.6	0.0034442	0.0034398	0.0002520
EARTH	2065-11-30 03:07	> 1 w	0.0273381	0.0272253	0.0128134
MERCURY	2070-07-23 20:46	> 1 mo	0.0374984	0.0350171	0.2853922
EARTH	2071-02-06 16:54	> 1 w	0.1569382	0.0048229	0.7321597
EARTH	2072-12-17 00:25	> 1 mo	0.1155125	0.0359264	0.3770726
VENUS	2074-03-07 03:23	> 1 mo	0.0195216	0.0101042	1.1161869
EARTH	2080-01-09 06:05	> 1 w	0.1357286	0.0709980	0.0424144
MERCURY	2083-11-01 14:13	> 1 mo	0.0492260	0.0286852	0.2635422
EARTH	2087-01-29 19:22	> 1 mo	0.0873124	0.0091910	0.8405921
EARTH	2088-11-30 02:10	> 1 mo	0.1227960	0.0267026	1.4338293
MERCURY	2090-10-19 06:05	> 1 mo	0.0371000	0.0350126	0.5200014
VENUS	2093-07-04 18:49	> 1 mo	0.0349262	0.0246749	1.7119952
EARTH	2094-02-07 19:09	> 1 mo	0.0046943	0.0040259	0.9262103
EARTH	2095-12-02 05:57	> 1 mo	0.0313951	0.0221850	9.7619256
EARTH	2103-01-09 13:17	> 1 mo	0.1345316	0.0542099	7.3528971
VENUS	2105-07-21 03:01	> 1 mo	0.0484326	0.0121931	104.0592548
VENUS	2109-07-04 08:36	> 1 mo	0.0488953	0.0260186	92.0889812
MERCURY	2109-08-06 23:13	> 1 mo	0.0437603	0.0194485	36.8144764
EARTH	2110-02-09 06:59	> 1 mo	0.0342377	0.0045197	80.6766718
EARTH	2111-12-07 07:28	> 1 mo	0.0656645	0.0219361	40.4951741
MERCURY	2115-11-01 23:48	> 1 mo	0.0491698	0.0337073	14.9844757
EARTH	2119-01-26 11:33	> 1 mo	0.1027410	0.0117267	40.2732137
EARTH	2120-12-01 08:01	> 1 mo	0.0982401	0.0227182	102.4590900
EARTH	2126-02-07 13:24	> 1 mo	0.1634313	0.0049854	174.9015888

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
232.77060177	32.96102912	0.00295803	MINIMUM
127.44219751	324.10596121	0.03201967	MINIMUM
179.55479380	358.19045676	0.13555072	SADDLE
0.00550603	178.39587295	0.56391653	SADDLE
0.06943669	358.50205084	1.43651957	SADDLE
180.08045975	178.52086732	2.13448750	MAXIMUM

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MOID Plots

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